/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package email;

import business.User;
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.*;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 *
 * @author duongna
 */
public class SearchEmailAddressServlet extends HttpServlet {
    
    /**
     * Processes requests for both HTTP
     * <code>GET</code> and
     * <code>POST</code> methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        ServletContext context = getServletContext();
        
        try {
            // make connection with database
            String dbUrl = context.getInitParameter("dbUrl");
            String userName = context.getInitParameter("dbUserName");
            String password = context.getInitParameter("dbPassword");
            Connection connection = DriverManager.getConnection(
                    dbUrl, userName, password);
            
            String perSql =
                    "SELECT * FROM emaildata " +
                    "WHERE emailAddress = ?";
            PreparedStatement preStatement = connection.prepareStatement(perSql);
            String emailAddress = request.getParameter("emailAddress");
            preStatement.setString(1, emailAddress);
            ResultSet resultSet = preStatement.executeQuery();
            if (resultSet.next()) {
                User user = new User(
                        resultSet.getString("firstName"),
                        resultSet.getString("lastName"),
                        resultSet.getString("emailAddress"));
                request.setAttribute("user", user);
            }
        } catch (SQLException ex) {
            for (Throwable t: ex) {
                t.printStackTrace();
            }
        }
        
        RequestDispatcher dispatcher = context.getRequestDispatcher("/search_email_address.jsp");
        dispatcher.forward(request, response);
    }
    
    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP
     * <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }
    
    /**
     * Handles the HTTP
     * <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }
    
    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
